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Dams / Reservoirs 
DAMS & RESERVOIRS

Following the damaging flood of 1914 and the creation of the Los Angeles County Flood Control District in 1915, a program of flood control and water conservation was initiated by the District. Part of this program included the construction of 14 dams which were completed between 1920 and 1939.

1. Big Dalton Dam
2. Big Tujunga Dam
3. Cogswell Dam
4. Devil's Gate Dam
5. Eaton Wash Dam

6. Live Oak Dam
7. Morris Dam
8. Pacoima Dam
9. Puddingstone Dam
10. Puddingstone Diversion Dam
11. San Dimas Dam
12. San Gabriel Dam
13. Santa Anita Dam
14. Thompson Creek Dam
These dams continue to be operated and maintained by Public Works to control flood waters during storm periods. Public Works makes post storm releases, when feasible, in amounts that can be conserved in downstream spreading grounds and by channel percolation. In addition, five U.S. Army Corps of Engineers' dams - Lopez, Hansen, Santa Fe, Sepulveda, and Whittier Narrows Dams, are operated by the Corps in conjunction with Public Works' dams to achieve flood control and/or water conservation.

Public Works' 14 dams and reservoirs' locations are shown on the map. Data and unpublished information for these facilities can be obtained by contacting the custodian of hydrologic records:

Los Angeles County Department of Public Works
Water Resources Division
P.O. Box 1460
Alhambra, CA 91802-1460
(626) 458-6120

Active Projects

Eaton Wash Dam Inlet/Outlet Rehabilitation Project:
Click here for photos of the gate inspection - Gate#1 (40MB)
Click here for photos of the gate inspection - Gate#2 (39.5MB)
Click here for photos of the gate inspection - Gate#3 (28.5MB)
Click here for photos of the gate inspection - Gate#4 (47.5 MB)

for more information about this project
Please Contact: Carol Ly
(626) 458-6144

Morris Dam Inlet/Outlet Rehabilitation Project:
Click here for the BULK ASBESTOS, LEAD METAL, LEAD-BASED PAINT, LIMITED HEXAVALENT CHROMIUM, AND POLY CHLORINATED BIPHENYLS SURVEY.
Click here for the ELECTRICAL SERVICE EQUIPEMENT.
Click here for the MORRIS DAM CONTROL HOUSE, FINAL GEOTECHNICAL REPORT - MARCH 2003.
Click here for the MORRIS DAM CONTROL HOUSE, 2007 CBC EARTHQUAKE DESIGN FACTOR UPDATE - FEBRUARY 2010.
Click here for the MORRIS DAM DATA.
Click here for the MORRIS DAM EMERGENCY GATE CHAMBER PHOTOS.
Click here for the MORRIS DAM VALVE LEAKAGE PHOTO.
Click here for the LABOR COMPLIANCE PROGRAM.
Click here for the Final INITIAL STUDY / MITIGATED NEGATIVE DECLARATION (IS/MND) MORRIS DAM WATER SUPPLY ENHANCEMENT.

for more information about this project
Please Contact: Jack Husted
(626) 458-6149

Santa Anita Stormwater Flood Management and Seismic Strengthening Project
Document: Draft MND
Start of Public Review: October 20, 2014
End of Public Review: December 4, 2014